NumberResearch Membership · Data 09/20/2026

Recent thousands-block assignments

21 blocks assigned in the last 30 days · from the daily NANPA thousands-block report, 09/20/2026

Full prefixes (NXX) Thousands-blocks (1,000-number pools)

Most carrier growth happens here, not at the prefix level: under number pooling, carriers receive individual 1,000-number blocks (e.g. 626-470-0XXX) within already-assigned prefixes. Assignments are initial assignments — the current serving carrier of individual numbers may differ due to portability.

Most active assignees, last 30 days — NPA 337
ONVOY, LLC - LA 17
NEW CINGULAR WIRELESS PCS, LLC - GA 2
CSC WIRELESS, LLC 2
New assignments by month Sep 2026 Aug 2026 Jul 2026 Jun 2026 May 2026 Apr 2026 Mar 2026 Feb 2026 Jan 2026 Dec 2025 Nov 2025 Oct 2025
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Recent thousands-block assignments
AssignedThousands-blockLast 4 digitsStatusAssigneeOCNRate centerState
2017-03-31 337-282-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C GUEYDAN LA
2017-03-09 337-382-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2017-03-06 337-445-8XXX 8000–8999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 BROUSSARD LA
2017-03-06 337-600-2XXX 2000–2999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2017-03-06 337-600-3XXX 3000–3999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2017-03-06 337-717-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2017-03-06 337-784-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CROWLEY LA
2017-03-01 337-703-4XXX 4000–4999Assigned COMCAST IP PHONE, LLC 318J LAFAYETTE LA
2017-02-27 337-336-5XXX 5000–5999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C VL PLATTE LA
2017-02-07 337-393-8XXX 8000–8999Assigned COMCAST IP PHONE, LLC 318J RAYNE LA
2017-02-01 337-909-6XXX 6000–6999Assigned COMCAST IP PHONE, LLC 318J BREAUX BDG LA
2017-01-23 337-223-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F GUEYDAN LA
2017-01-23 337-245-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F SWEET LAKE LA
2017-01-23 337-357-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F WEEKS IS LA
2017-01-23 337-388-2XXX 2000–2999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F JENNINGS LA
2017-01-23 337-388-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F JENNINGS LA
2017-01-12 337-306-5XXX 5000–5999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F RAYNE LA
2017-01-10 337-488-0XXX 0000–0999Assigned METROPCS, INC. 5562 LK CHARLES LA
2017-01-10 337-488-1XXX 1000–1999Assigned METROPCS, INC. 5562 LK CHARLES LA
2017-01-10 337-570-0XXX 0000–0999Assigned METROPCS, INC. 5562 LK CHARLES LA
2016-11-30 337-438-8XXX 8000–8999Assigned METROPCS, INC. 5562 LK CHARLES LA
2016-11-30 337-703-1XXX 1000–1999Assigned METROPCS, INC. 5562 LAFAYETTE LA
2016-11-28 337-600-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2016-11-28 337-600-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 ABBEVILLE LA
2016-11-21 337-447-3XXX 3000–3999Assigned VOICESTREAM GSM I, LLC 150C OPELOUSAS LA
2016-11-21 337-447-9XXX 9000–9999Assigned VOICESTREAM GSM I, LLC 150C OPELOUSAS LA
2016-11-21 337-785-7XXX 7000–7999Assigned VOICESTREAM GSM I, LLC 150C CROWLEY LA
2016-11-18 337-459-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 VL PLATTE LA
2016-11-08 337-222-2XXX 2000–2999Assigned CENTURYLINK COMMUNICATIONS, LLC 508J DE QUINCY LA
2016-10-21 337-518-1XXX 1000–1999Assigned DETEL WIRELESS, LLC - LA 650C VL PLATTE LA
2016-10-07 337-930-5XXX 5000–5999Assigned CELLCO PARTNERSHIP DBA VERIZON WIRELESS - LA 6505 WELSH LA
2016-09-19 337-485-0XXX 0000–0999Assigned METROPCS, INC. 5562 LK CHARLES LA
2016-09-19 337-485-8XXX 8000–8999Assigned METROPCS, INC. 5562 LK CHARLES LA
2016-08-24 337-317-7XXX 7000–7999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DE QUINCY LA
2016-08-24 337-317-9XXX 9000–9999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DE QUINCY LA
2016-08-22 337-226-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DE RIDDER LA
2016-08-22 337-226-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 DE RIDDER LA
2016-08-22 337-965-4XXX 4000–4999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARLYSS LA
2016-08-22 337-965-5XXX 5000–5999Assigned NEW CINGULAR WIRELESS PCS, LLC - GA 6214 CARLYSS LA
2016-08-17 337-510-6XXX 6000–6999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C SUNSET LA
2016-08-10 337-242-1XXX 1000–1999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F STMARTINVL LA
2016-08-10 337-369-0XXX 0000–0999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F NEW IBERIA LA
2016-08-10 337-409-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F VINTON LA
2016-08-10 337-509-4XXX 4000–4999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F LEESVILLE LA
2016-08-10 337-514-7XXX 7000–7999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F CROWLEY LA
2016-08-10 337-606-8XXX 8000–8999Assigned TELEPORT COMMUNICATIONS AMERICA LA - LLC 653C NEW IBERIA LA
2016-07-22 337-426-8XXX 8000–8999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F LK CHARLES LA
2016-07-22 337-607-3XXX 3000–3999Assigned BANDWIDTH.COM CLEC, LLC - LA 153F SULPHUR LA
2016-06-30 337-612-1XXX 1000–1999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 IOTA LA
2016-06-30 337-614-1XXX 1000–1999Assigned LOUISIANA COMPETITIVE TELECOMMUNICATIONS, INC. 4930 CANKTON LA

Source: NANPA Thousands Block Assignment Report (All Regions, Public), file date 09/20/2026 — Tier A primary source, refreshed on every import. Viewing is free; bulk downloads require a membership.